Subversion Repositories HelenOS

Rev

Rev 3828 | Rev 3860 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
1 jermar 1
/*
2071 jermar 2
 * Copyright (c) 2001-2004 Jakub Jermar
1 jermar 3
 * All rights reserved.
4
 *
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
7
 * are met:
8
 *
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
13
 *   documentation and/or other materials provided with the distribution.
14
 * - The name of the author may not be used to endorse or promote products
15
 *   derived from this software without specific prior written permission.
16
 *
17
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
28
 
1729 decky 29
/** @addtogroup main
1702 cejka 30
 * @{
31
 */
32
 
1248 jermar 33
/**
1702 cejka 34
 * @file
1248 jermar 35
 * @brief   Kernel initialization thread.
36
 *
37
 * This file contains kinit kernel thread which carries out
38
 * high level system initialization.
39
 *
40
 * This file is responsible for finishing SMP configuration
41
 * and creation of userspace init tasks.
42
 */
43
 
510 jermar 44
#include <main/kinit.h>
1 jermar 45
#include <config.h>
46
#include <arch.h>
47
#include <proc/scheduler.h>
48
#include <proc/task.h>
49
#include <proc/thread.h>
3222 svoboda 50
#include <proc/program.h>
1 jermar 51
#include <panic.h>
52
#include <func.h>
53
#include <cpu.h>
54
#include <arch/asm.h>
55
#include <mm/page.h>
56
#include <arch/mm/page.h>
703 jermar 57
#include <mm/as.h>
517 jermar 58
#include <mm/frame.h>
195 vana 59
#include <print.h>
236 jermar 60
#include <memstr.h>
517 jermar 61
#include <console/console.h>
578 palkovsky 62
#include <interrupt.h>
518 jermar 63
#include <console/kconsole.h>
1174 jermar 64
#include <security/cap.h>
2000 decky 65
#include <lib/rd.h>
2089 decky 66
#include <ipc/ipc.h>
1 jermar 67
 
458 decky 68
#ifdef CONFIG_SMP
1901 jermar 69
#include <smp/smp.h>
458 decky 70
#endif /* CONFIG_SMP */
1 jermar 71
 
72
#include <synch/waitq.h>
73
#include <synch/spinlock.h>
74
 
3840 decky 75
#define ALIVE_CHARS  4
76
 
77
static char alive[ALIVE_CHARS] = "-\\|/";
78
 
523 jermar 79
/** Kernel initialization thread.
80
 *
81
 * kinit takes care of higher level kernel
82
 * initialization (i.e. thread creation,
83
 * userspace initialization etc.).
84
 *
85
 * @param arg Not used.
86
 */
1 jermar 87
void kinit(void *arg)
88
{
89
 
3707 decky 90
#if defined(CONFIG_SMP) || defined(CONFIG_KCONSOLE)
91
    thread_t *thread;
92
#endif
93
 
1576 jermar 94
    /*
95
     * Detach kinit as nobody will call thread_join_timeout() on it.
96
     */
97
    thread_detach(THREAD);
98
 
413 jermar 99
    interrupts_disable();
1 jermar 100
 
458 decky 101
#ifdef CONFIG_SMP           
1 jermar 102
    if (config.cpu_count > 1) {
1901 jermar 103
        waitq_initialize(&ap_completion_wq);
1 jermar 104
        /*
105
         * Create the kmp thread and wait for its completion.
106
         * cpu1 through cpuN-1 will come up consecutively and
430 jermar 107
         * not mess together with kcpulb threads.
1 jermar 108
         * Just a beautification.
109
         */
3707 decky 110
        thread = thread_create(kmp, NULL, TASK, THREAD_FLAG_WIRED, "kmp", true);
111
        if (thread != NULL) {
112
            spinlock_lock(&thread->lock);
113
            thread->cpu = &cpus[0];
114
            spinlock_unlock(&thread->lock);
115
            thread_ready(thread);
1729 decky 116
        } else
3790 svoboda 117
            panic("Unable to create kmp thread.");
3707 decky 118
        thread_join(thread);
119
        thread_detach(thread);
1 jermar 120
    }
458 decky 121
#endif /* CONFIG_SMP */
3707 decky 122
 
458 decky 123
#ifdef CONFIG_SMP
1 jermar 124
    if (config.cpu_count > 1) {
2223 decky 125
        count_t i;
673 jermar 126
 
125 jermar 127
        /*
1 jermar 128
         * For each CPU, create its load balancing thread.
129
         */
130
        for (i = 0; i < config.cpu_count; i++) {
3707 decky 131
            thread = thread_create(kcpulb, NULL, TASK, THREAD_FLAG_WIRED, "kcpulb", true);
132
            if (thread != NULL) {
133
                spinlock_lock(&thread->lock);
134
                thread->cpu = &cpus[i];
135
                spinlock_unlock(&thread->lock);
136
                thread_ready(thread);
1729 decky 137
            } else
3707 decky 138
                printf("Unable to create kcpulb thread for cpu" PRIc "\n", i);
1 jermar 139
 
140
        }
141
    }
458 decky 142
#endif /* CONFIG_SMP */
3707 decky 143
 
510 jermar 144
    /*
512 jermar 145
     * At this point SMP, if present, is configured.
146
     */
147
    arch_post_smp_init();
148
 
3707 decky 149
#ifdef CONFIG_KCONSOLE
150
    if (stdin) {
151
        /*
152
         * Create kernel console.
153
         */
154
        thread = thread_create(kconsole_thread, NULL, TASK, 0, "kconsole", false);
155
        if (thread != NULL)
156
            thread_ready(thread);
157
        else
158
            printf("Unable to create kconsole thread\n");
159
    }
160
#endif /* CONFIG_KCONSOLE */
161
 
413 jermar 162
    interrupts_enable();
3060 decky 163
 
164
    /*
165
     * Create user tasks, load RAM disk images.
166
     */
1037 decky 167
    count_t i;
3222 svoboda 168
    program_t programs[CONFIG_INIT_TASKS];
3060 decky 169
 
1037 decky 170
    for (i = 0; i < init.cnt; i++) {
1999 decky 171
        if (init.tasks[i].addr % FRAME_SIZE) {
3707 decky 172
            printf("init[%" PRIc "].addr is not frame aligned\n", i);
1999 decky 173
            continue;
174
        }
3707 decky 175
 
3222 svoboda 176
        int rc = program_create_from_image((void *) init.tasks[i].addr,
3566 svoboda 177
            "init-bin", &programs[i]);
3707 decky 178
 
179
        if ((rc == 0) && (programs[i].task != NULL)) {
1174 jermar 180
            /*
181
             * Set capabilities to init userspace tasks.
182
             */
3222 svoboda 183
            cap_set(programs[i].task, CAP_CAP | CAP_MEM_MANAGER |
2087 jermar 184
                CAP_IO_MANAGER | CAP_PREEMPT_CONTROL | CAP_IRQ_REG);
1174 jermar 185
 
3060 decky 186
            if (!ipc_phone_0)
3222 svoboda 187
                ipc_phone_0 = &programs[i].task->answerbox;
188
        } else if (rc == 0) {
189
            /* It was the program loader and was registered */
1999 decky 190
        } else {
3222 svoboda 191
            /* RAM disk image */
3707 decky 192
            int rd = init_rd((rd_header_t *) init.tasks[i].addr, init.tasks[i].size);
1999 decky 193
 
2002 decky 194
            if (rd != RE_OK)
3707 decky 195
                printf("Init binary %" PRIc " not used (error %d)\n", i, rd);
1999 decky 196
        }
717 decky 197
    }
3060 decky 198
 
199
    /*
200
     * Run user tasks with reasonable delays
201
     */
202
    for (i = 0; i < init.cnt; i++) {
3222 svoboda 203
        if (programs[i].task != NULL) {
3060 decky 204
            thread_usleep(50000);
3222 svoboda 205
            program_ready(&programs[i]);
3060 decky 206
        }
207
    }
1 jermar 208
 
3707 decky 209
#ifdef CONFIG_KCONSOLE
517 jermar 210
    if (!stdin) {
3840 decky 211
        thread_sleep(10);
3707 decky 212
        printf("kinit: No stdin\nKernel alive: ");
213
 
3840 decky 214
        unsigned int i = 0;
215
        while (true) {
216
            printf("\b%c", alive[i % ALIVE_CHARS]);
517 jermar 217
            thread_sleep(1);
3707 decky 218
            i++;
517 jermar 219
        }
1 jermar 220
    }
3707 decky 221
#endif /* CONFIG_KCONSOLE */
1 jermar 222
}
1702 cejka 223
 
1729 decky 224
/** @}
1702 cejka 225
 */